MIC2012 MICREL [Micrel Semiconductor], MIC2012 Datasheet
MIC2012
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MIC2012 Summary of contents
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... The MIC2012 is a dual channel USB power switch designed to support the power distribution requirements for USB Wakeup from the ACPI S3 state. The MIC2012 will directly switch its two outputs between a 5V main supply and a 5V auxiliary supply normally provided in ATX style power supplies. ...
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... MIC2012 Ordering Information Part Number Enable MIC2012CM n/a MIC2012PCM* n/a MIC2012-1CQS* Active High MIC2012-1PCQS* Active High MIC2012-2CQS* Active Low MIC2012-2PCQS* Active Low MIC2072CM* n/a MIC2072PCM* n/a MIC2072-1CQS* Active High MIC2072-1PCQS* Active High MIC2072-2CQS Active Low MIC2072-2PCQS* Active Low * Contact factory for availability. Pin Configuration FAULT1 ...
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... MAIN 5V Main Supply (Input): All MAIN inputs must be connected together externally. OUT1 Channel 1 (Output): For MIC2012-1, -2 both pins must be externally connected together. EN2 Enable (Input): Channel 2, active-high (–1) or active-low (–2). Toggling this input also resets the latched output of the MIC2072. ...
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... EN2, for MIC20x2-x only) I S3#, EN1, EN2 Input Current IN (EN1, EN2, for MIC20x2-x only) I OUT1, OUT2 Leakage Current OFF (MIC2012-x, MIC2072-x only) Pull-Up Current During Latched Output State (MIC2072-1, -2) MIC2012/2072 Operating Ratings (Note 1, Note 4) Supply Voltage (V Ambient Temperature (T Junction Temperature (T ...
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... For MIC20x2-2(P) OFF occurs when Micrel Min Typ Max Units 1. V/s 140 C 120 C 160 C 150 C 0 0.6 ms 120 s 0.5 ms 115 7.5 ms > 2.4V and 40ms max if one channel DLY MIC2012/2072 ...
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... MIC2012 Test Circuit V OUT MIC2012/2072 V OUT I Device OUT Under OUT Test 90% 90% 10% 10% 6 Micrel t f September 2000 ...
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... Timing Diagrams OUT OUT V OUT I OUT FAULT# MAIN S3# 1.5V September 2000 50% t OFF t ON 90% Figure 2. MIC2012/72-1 50% t OFF t ON 90% Figure 3. MIC2012/72-2 Output shorted to ground I LIMIT DLY Figure 4. Overcurrent Response Timing t H Figure 5. MAIN to S3# Timing 7 10% 10 1.5V MIC2012/2072 Micrel ...
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... MOSFET switch from the AUX input to each of its two outputs. Conversely when the S3# input is HIGH (S0 state) the MIC2012/72 will switch a 100m , 500mA MOSFET switch from the MAIN input to each of its two outputs. The lower current limit during the ACPI S3 state helps to ensure that the standby supply maintains regulation even during fault conditions ...
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... This helps to ensure that the power supply DLY voltage regulation is preserved and also prevents possible damage to sensitive components. Thermal Shutdown Figure 6. MIC2012 System Timing Load Removed– Figure 7. MIC2072 System Timing— Output Resets When Load is Removed 9 Overcurrent Fault ...
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... This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel Inc. MIC2012/2072 PIN 1 0.012 (0.30) ...